Patents by Inventor Johann Zweifel

Johann Zweifel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Individually driven folder for a rotary printing press
    Patent number: 5775222
    Abstract: A rotary printing press comprising a plurality of folder units including a cutting cylinder and a folding jaw cylinder with each of the folder units having a separate drive motor mechanially driving each folder unit separately from the plurality of printing units with each folder unit registerable independently from the plurality of printing units.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: July 7, 1998
    Assignee: Maschinenfabrik WIFAG
    Inventors: Johann Zweifel, Thomas Treuthardt